/* 全局公共样式必须是.global_...格式，在页面中好区分是全局样式还是当前页面样式 */
@screenwidth: 1200px;

.global_fl { float: left; }
.global_fr { float: right; }
.global_clearfloat:after,.global_clearfloat:before{content:"";display:block;clear: both;}
.global_tl { text-align: left; }
.global_tc { text-align: center; }
.global_tr { text-align: right; }
.global_vm { vertical-align: middle; }
.global_vtb { vertical-align: text-bottom; }
.global_vt { vertical-align: top; }
.global_oh { overflow: hidden; }
.global_pa { position: absolute; }
.global_pr { position: relative; }
.global_fb { font-weight: bold; }
.global_cursor { cursor: pointer; }
.global_translate { transform: translate(-50%, -50%); -webkit-transform: translate(-50%, -50%); top: 50%; left: 50%;}
.global_translateX { transform: translateX(-50%); -webkit-transform: translateX(-50%); left: 50%;}
.global_translateY { transform: translateY(-50%); -webkit-transform: translateY(-50%); top: 50%;}